package ch2;

public class Variable {

	public static void main(String[] args) {
		String name = "吴瑞";
		System.out.println(name);
		int a = 23;
		int b = a;
		a = 50;
		System.out.println("a=" + a + ",b=" + b);
		// a和b互换
		int c = a;
		a = b;
		b = c;
		System.out.println("a=" + a + ",b=" + b);

	}

}
